Usage:
Memphis Sand of Claiborne Group (AR*,MO*,TN*)
Geologic age:
early Tertiary (middle Eocene)*
Type section, locality, area and/or origin of name:
Type section (subsurface): depth-interval 186 to 399 m, Fort Pillow test well, at the site of old Fort Pillow on the Mississippi River, Lat. 35 deg. 38 min. 39 sec. N., Long. 89 deg. 49 min. 35 sec. W., Lauderdale Co., west-central TN. Named from City of Memphis (Moore and Brown, 1969).
AAPG geologic province:
Upper Mississippi embayment*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).